The reason to begin with was the Mac OS was x86-32 and the iOS environment was arm. Building for intel let the ui devs have high performance by leveraging the e

The reason to begin with was the Mac OS was x86-32 and the iOS environment was arm. Building for intel let the ui devs have high performance by leveraging the existing network stack and graphics compositor. But most of the libraries live parallel in the sim, not using the OS ones. That wouldn’t allow you to simulate different iOS versions.